Feature Description

In uplink direction, the UE and the GI IP can be in a different subnet. The routing path in UPF is defined to allow the uplink packet to be forwarded accordingly.

Nexthop IP address can be configured at both UPF and SMF. At the SMF, you can configure Nexthop IP address under DNN profile or IPAM profile. During PDU Establishment, the SMF relays the IPv4/IPv6 address over the N4 interface in the NEXT HOP IP private IE in a PFCP Session Establishment Request. At the UPF, you can configure Nexthop IP address through Charging-Action.

For more information, refer to the UCC 5G UPF Configuration and Administration Guide > Nexthop Forwarding Support chapter.